I think I've already got TMNT transcribed; I guess I just didn't post it. I'll take a look. The TMNT patent also has code, and I'm pretty sure I typed it in. The patent says is uses an SM-510, but it's really a -511, with the melody ROM.
Ranger Lennier sent me lots of R-Zone carts. I've experimented with de-globbing several of them. A couple used Sharp SM-5's, but I'm not sure what others use. I should have more experience (and acid!) to clean them up better now. I probably also ought to send scans to Kevin to see if he thinks it might be possible to electronically dump them.